140542101 has 16 divisors (see below), whose sum is σ = 237955200. Its totient is φ = 80309664.

The previous prime is 140542099. The next prime is 140542117. The reversal of 140542101 is 101245041.

It is not a de Polignac number, because 140542101 - 2¹ = 140542099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140542151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371616 + ... + 371993.

It is an arithmetic number, because the mean of its divisors is an integer number (14872200).

Almost surely, 2^140542101 is an apocalyptic number.

It is an amenable number.

140542101 is a deficient number, since it is larger than the sum of its proper divisors (97413099).

140542101 is an equidigital number, since it uses as much as digits as its factorization.

140542101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743625 (or 743619 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 140542101 is about 11855.0453816086. The cubic root of 140542101 is about 519.9187508658.

Adding to 140542101 its reverse (101245041), we get a palindrome (241787142).

The spelling of 140542101 in words is "one hundred forty million, five hundred forty-two thousand, one hundred one".